supply of coupler body with shank wear platecoupler body with shank wear plate, coupler body with shank wear plate for transition cbc. drg no. sk - 62724 alt. 28, item no. 18 & 10. mat. & spec: str no. 56-bd-07 with amend. no. 2. note : 1 ) guarantee certificate for a period of 30 months from the date of supply to be submitted. 2 ) mpt / dpt test will be done for any cracks during acceptance of the material as per rdso lr.no, el / 3.2.119 ( cbc0 ) dt.27.11.2019. 3 ) this item is reserved for supply by approved source in ireps vendor directory only. ( as per ireps vendor directory blw item id:2201258 - sub item id 2201258002 & 2201258007, high tensile centre buffer coupler & coupler body ) .